I obtained a .laz file, which I used lasinfo
and las2txt
to view the records.
Scale Factor X Y Z: 0.00100000000000 0.00100000000000 0.00100000000000
Offset X Y Z: 22717.000 31027.000 21.000
Min X Y Z: 23776.000 30560.000 14.859
Max X Y Z: 23807.997 30591.999 43.696
Spatial Reference:
PROJCS["SVY21 / Singapore TM",
GEOGCS["WGS84, WGS84",
DATUM["unknown",
SPHEROID["unnamed",6378137,298.257223563]],
PRIMEM["Greenwich",0],
UNIT["degree",0.0174532925199433]],
PROJECTION["Transverse_Mercator"],
PARAMETER["latitude_of_origin",1.366666666666667],
PARAMETER["central_meridian",103.8333333333333],
PARAMETER["scale_factor",1],
PARAMETER["false_easting",28001.642],
PARAMETER["false_northing",38744.572],
UNIT["metre",1,
AUTHORITY["EPSG","9001"]]]
and a sample record is 23776.000,30560.047,19.450
.
Now, how do I interpret the above information, as in where is the origin in which the record referenced? When I punch in the lat, long from the above, I got the point below. If that is the origin and the X and Y is pointing eastwards and northwards respectively, then my assumption is incorrect, as I am certain that the data originated from somewhere southwest of that marker.